Another VG Issue

[tim99]

Hello, every morning for a while now my channel 1 Yellow ink line is empty.
I have to manually fill the damper and line (push in the prong to touch the sensor so the yellow pump kicks on)
then perform a manual cleaning before the yellow begins to print again. and even then part of the yellow channel is magenta.

I replaced all 4 captops, and the one damper on this print head.

any ideas on what to check next?

Roland VG-540

 

[rjssigns]

Air leak causing cross contamination? Maybe something is misaligned or the nipple where the damper attaches has a tiny crack.

 

[GTSTech_1]

Not sure how your not coming into the shop with the "red flashing" light, would expect that if a damper is empty, and you have to manually move the wing to engage the sensor.

I would try a flushing adjustment, to clear up the cross contamination.

just me .02

 

[Glennora]

Couldn't hurt to check the pump lines for possible hardening, cracks, air leak or blockage & make sure the yellow ink cartridge is properly seated. Agree with RJS. It seem air must be getting in somewhere.

 

[tim99]

not sure why its not flashing red either. yes i have to manually move the wing into the sensor in order for it to pump up..

thanks for the ideas everyone Ill check out the lines and inspect for cracks.

 

[Gabil]

Air leakage due to improper seal. Flushing position adjustment and capping station stopper adjustment.